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The Mark of Athena
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Perfection Learning Corporation
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My Pal, Blaise
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Richard Leviton
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UXL Encyclopedia of World Mythology
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Son of Neptune: The Graphic Novel
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Robert Venditti, Rick Riordan
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Tales of Brave and Brilliant Girls from the Greek Myths
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Rosie Dickins, Susanna Davidson
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The House of Hades: The Graphic Novel
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Rick Riordan, Robert Venditti
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The Gaia Peace Atlas
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Frank Barnaby
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Gaia Codex
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Sarah Drew
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The Heroes of Olympus, Book Three: the Mark of Athena: the Graphic Novel
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Rick Riordan
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Gaia
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Imogen Greenberg
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